EP 1895165 B1 20100428 - Axial fan and blade design method for the same
Title (en)
Axial fan and blade design method for the same
Title (de)
Axiallüfter und Auslegungsverfahren dafür
Title (fr)
Ventilateur axial et son procédé de conception
Publication
Application
Priority
- JP 2006229184 A 20060825
- JP 2006229185 A 20060825
Abstract (en)
[origin: EP1895165A1] An axial fan which includes a hub portion having the rotational center thereof and blades arranged on the outer periphery of the hub portion is equipped with a thickness reinforcing portion which extends from the joint portion between the blade front edge portion of the blade and the hub portion to the outer periphery of the blade along the blade front edge and whose width and thickness are smaller as the distance from the rotational center of the hub portion is larger. Furthermore, the axial fan is equipped with an additional blade. There is achieved an arc corresponding to the overlap portion between the blade and a circle of a first radius which passes from the blade front edge side of the blade to the blade rear edge side and has as the center thereof any reference point displaced from the rotational center on a plane vertical to the rotational axis of the hub portion and the blade. The arc is set as a blade shape changing portion from which the shape of the blade is changed, and the additional blade is designed so as to project from the blade shape changing start portion to the blade negative pressure plane side.
IPC 8 full level
F04D 29/38 (2006.01)
CPC (source: EP KR US)
F04D 29/329 (2013.01 - EP US); F04D 29/34 (2013.01 - EP US); F04D 29/38 (2013.01 - KR); F04D 29/388 (2013.01 - EP US); F04D 29/66 (2013.01 - KR)
Designated contracting state (EPC)
DE FR GB HU IT
DOCDB simple family (publication)
EP 1895165 A1 20080305; EP 1895165 B1 20100428; DE 602007006116 D1 20100610; KR 100934847 B1 20091231; KR 20080018838 A 20080228; US 2008050240 A1 20080228; US 8038406 B2 20111018
DOCDB simple family (application)
EP 07016560 A 20070823; DE 602007006116 T 20070823; KR 20070085442 A 20070824; US 84386007 A 20070823